public class CalculatorTest {

    public static void main(String[] args){

        Calculator calculator = new Calculator();


        calculator.num1 = 10;
        calculator.num2 = 9;

        calculator.add();

        calculator.sub();



        int num1 = 10;
        int num2 = 9;
        System.out.println(num1 + num2);





    }





}
